Door or gate opening and closing device.



No. 887,307; 1 PATENTED MAY 12, 1908. R. B. BROWNE.

DOOR 0R. GATE OPENING AND GLOSING DEVICE.

APPLICATION nun mm: 2, 1904.

. I I 'INVENTOR Atiomey PATENT OFFICE.

RICHARD B. BROWNE, OF NEW YORK, N. Y.

1 DOOR OR GATE OPENING AND CLOSING DEVICE.

Specification of Letters Patent.

Patented May 12, 1908.

Application filed June 2, 1904. Serial No. 210,911.

To all whom it may concern:

Be it known that I, RICHARD B. BROWNE, of New York, in the borough ofBrooklyn and State of New York, have invented certain new and usefulImprovements in Door or Gate Opening and Closing Devices; and I dohereby declare the following to be a full and clear description thereof.

My invention relates to door operating devices.

The present invention deals with simple and efficient mechanism foroperating sliding doors comprising two or more sections andautomatically operating latches used in connection therewith.

The invention consists in the following construction and combination ofparts, the details of which will first be fully described and thefeatures of novelty then set forth in the claims.

Figure 1 represents a side elevation of a sectional sliding door havingmy invention applied thereto, the top of the elevation being brokenaway. Fig. 2 is a horizontal section through Fig. 1 showin the doorsclosed. Fig. 3 is a similar view s owing the doors partl open. Fig. 4 isa view similar to Figs. 2 and 3 showing the doorsopen.

The concrete example of the invention given for purposes of illustrationin thisinstance is an elevator shaft door, it being understood that theinvention is applicable to all analogous uses.

In the drawings, 1 is a stationary panel covering part of the shaftopening. 2 and 3, sectional sliding doors. 4, a stationary bearinglocated at some convenient point, say upon the floor to one opening. 5,a link pivoted thereto, its opposite end being capable of an oscillatingvertical movement. 6, a lever pivoted at its lower end 13 to the link 5and having pivotal points of connection with the doors 2 and 3, in theone case directly and the other case indirectly. 7, a pivot bearing upondoor 3 in which the upper end of lever 6 is secured. 8, a pivot bearingof the door 2. 9, a secondary link having its bearing on pivot 8 at oneend and at its other end pivoted to lever 6 at an intermediate point 10of the lever.

In the exemplifying structure adopted for purposes of illustration thevibrating or swinging lever or arm 6 is adapted to swing radiallythrough a given radius in the openside of the door' ing and closingmovements of the doors, said lever having the sectional doors pivotedrespectively thereto.

In the illustration furnished in Fig. 1 there is an entire absence ofsliding connectionsbetween the main lever and its operating parts, suchas pin and slot devices and the like, which provide for compensatorymovements. The necessary adjustments of the lever system are providedfor by the links 5 and 9 pivoted to the lever arm 6.

In Fig. 1 the doors are shown closed. When the doors are 0 erated toallow passage through, say one-haff the door opening, the parts are inthe position shown by Fig. 3 and the lever mechanism is in theositionshown by dotted lines 11 in Fig. 1. fi hen the doors are fullyopened the osition is correctly shown in Fig. 4 and in ot-anddash lines12 in Fig. 1.

In the opening movement of the door it will be noticed that the free endof link 5 travels downwardly to a p'ositionsubstark tially horizontal,the lever 6 assuming a substantially vertical position, and the link 9moving to the left and assuming a different angle from that of theclosed position. When the door is fully opened the link 5 again risesinto substantially the same position it as sumed when the door wasclosed. The lever 6 has swung beyond the vertical position toward theleft at about the same angle from a vertical line that the lever assumedwhen the door was closed, and the link 9 is restored to about the sameangle that it assumed when the door was closed. This constructionresults in a marked ease of operation and a complete avoidance ofliability to get out of order.

Instead of the lever 6 being pivoted to links 5 to provide forcompensatory movement, slot and pin bearings may be provided at 7 or13-for performing the same function. The upper portion of the lever arm6 is pref erably curved as shown so as to carry the arm at its upper endbehind the sectional doors at all times, thereby preventin any tendencyof an accident by the hand eing caught by the lever.

I do not limit the application of the principles of this invention toany specific construction, arrangement or number of doors, butanticipate the use thereof in any structure where such principles may beapphcable.

What I claim as new and desire to secure by Letters Patent is:

I. The combination of a series of horizontally slidable doors, a leverpivoted to the outer door, a compensatory link pivoted to a stationarypoint and to the free end of the lever, and a second link pivoted to aninterpoint of the lever and to the inner tally slidable doors, a leverpivoted to the outer door having a curved upper portion, a compensatorylink pivoted to a stationary point and to the free end of the lever, anda second link pivoted to an intermediate point of the lever and to theinner door. 4. The combination of a series of doors, ways for slidingthe same, a link pivoted to a stationary point, a lever pivoted to thelink, another link pivoted at an intermediate point of the lever at oneend and to one of the doors at the other end and a pivotal connec tionbetween the lever and a second door.

In testimony whereof I have afiiXed my signature in the presence of twowitnesses.

RICHARD BROWNE.

